package com.hmall.common.interceptor;
/*
  Date: 2023/12/02
  Author: Luochao
  Description:
*/

import cn.hutool.core.util.StrUtil;
import com.hmall.common.utils.UserContext;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


/**
 * 拦截，获取用户信息放入ThreadLocal
 */
public class UserInfoInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1.获取用户信息
        String userId = request.getHeader("user-info");

        //2.如果获取到，存入threadLocal
        if (StrUtil.isNotBlank(userId)) {
            UserContext.setUser(Long.valueOf(userId));
        }

        //放行
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        UserContext.removeUser();
    }
}
